Furniture manufacturer is eligible for ITC on input and input services. He is using this input and input services for manufacturing of furniture. Furniture is goods for them. Or we can say he his providing works contract services. When supplier is using input and input services for providing taxable output supply then he is eligible for ITC.
But from recipient point of view it may be movable or immovable. If it's immovable for recipient then GST charged by furniture manufacturer is blocked credit for him under sec 17(5) of CGST Act 2017.
For eg. A contractor is providing commercial building construction services by using input and input services in that case he is eligible for ITC. But from recipient point of view it's immovable porpery and recipient is not eligible for ITC charged by contractor.